Changzhou Metro opened
The Changzhou Metro is a rapid transit system in Changzhou, Jiangsu province, China. The system started operation on 21 September 2019, with the opening of its first line. Changzhou became the 35th city in China with a subway.
The KK100 was completed
The KK100, formerly known as Kingkey 100 and Kingkey Finance Tower, is a supertall skyscraper in Shenzhen, Guangdong. The mixed-use building rises 441.8 metres (1,449 ft) and contains 98 floors for office space and a hotel. Out of those 98 floors, 74 are used for 173,000 square metres (1,862,157 sq ft) of Class A office space, 26 stories for a 35,000 square metres (376,737 sq ft) six-star business hotel and the top four floors of the skyscraper hold a garden and several restaurants. The building has a height-width ratio of 9.5:1, thus becoming one of China's slimmest buildings.
1999 Jiji earthquake
The 1999 Jiji earthquake was a 7.3 ML or 7.7 Mw earthquake which occurred in Jiji, Nantou County, Taiwan. 2,415 people were killed, 11,305 injured, and NT$300 billion worth of damage was done. It is the second-deadliest earthquake in Taiwan's recorded history, after the 1935 Shinchiku-Taichu earthquake. Rescue groups from around the world joined local relief workers and the Taiwanese military in digging out survivors, clearing rubble, restoring essential services and distributing food and other aid to the more than 100,000 people made homeless by the quake.
Shihgang Dam damage
Shihgang Dam is a concrete gravity barrage dam across the Dajia River in Shigang District and Dongshi District of Taichung, Taiwan, located near Fengyuan District. The dam was built from 1974 to 1977 for flood control and irrigation purposes, and stands 35.2 m (115 ft) high and 357 m (1,171 ft) long, holding a reservoir with an original capacity of 3,380,000 m3 (2,740 acre-ft). The dam was heavily damaged in the 1999 Jiji earthquake, which caused the collapse of its northern end. Subsequently, an embankment cofferdam was built to prevent water from flowing through the breach, while the collapsed section has been retained as a memorial. Since this reduces the storage capacity of the dam, it is no longer used for flood control, but remains an important source of agricultural water.
Jean-Baptiste Élie de Beaumont died
Jean-Baptiste Armand Louis Léonce Élie de Beaumont was a French geologist. In 1861 he became vice-president of the Conseil-General des Mines and a grand officer of the Legion of Honour. His growing scientific reputation secured his election to the membership of the Academy of Berlin, of the French Academy of Sciences, of the Royal Society of Edinburgh (1845), of the Royal Society of London, as a foreign member of the Royal Swedish Academy of Sciences (1848), and as an international member of the American Philosophical Society (1860). Élie de Beaumont's name is widely known to geologists in connection with his theory of the origin of mountain ranges, first propounded in a paper read to the Academy of Sciences in 1829.
